A cyberattack forced the Pennsylvania Senate Democratic Caucus to shutdown its computer system on Friday, according to a statement from the caucus' leader Sen. Jay Costa.

The Ransomware attack, discovered early Friday morning, delivered malware to computers throughout the network, making its systems and data inaccessible to caucus members and employees throughout the day, it indicated.

The Senate Democratic offices remained open on Friday. As of 5:15 p.m., the system was still down, said caucus spokeswoman Stacey Witalec.

The state attorney general's office and FBI were called in to investigate the hacking, which top Senate Republican staffer Drew Crompton said did not affect the GOP caucus' system.

Joe Grace, spokesman for Attorney General Josh Shapiro, said Friday evening that Shapiro "spoke with Leader Costa this afternoon and the office is looking into the cyber-attack, which we take very seriously."

According to Costa's statement, there is no indication that data was compromised or that the Democrats' system was targeted.

It explains Ransomware encrypts data on an infected system and demands users pay ransom in Bitcoin, a digital currency, in order to get a decryption key to unlock the network and data. Asked if anyone paid the ransom, Witalec said that's part of the investigation.